香兰素

As of 2001, the annual demand for vanillin was 12,000 tons, but only 1800 tons of natural vanillin was produced.

截至2001年，每年的需求量为12000吨，香草，但只有1800吨天然香兰素生产。

Methods According to the synthetic situation of vanillin recently, main synthetic process are both narrated and appraised.

根据目前合成状况，对香兰素的主要合成方法进行叙述和评价。

At present ,vanillin compound has become one of the products which is used in the biggest quantity,but its price is more higher than other product.

目前，在食用香精中，香兰素系列化合物是使用量最大的品种之一，也是价值比较高的一类品种。

In order to expand their business now, I recommend to your company's products - concentrated Fu vanillin.

现为了拓展业务，向贵公司推荐我公司产品——浓馥香兰素。

Inhibition effect of vanillin against bacteria, yeast and mold by plate spreading method was studied.

通过平板涂布法研究了香兰素对细菌、酵母菌及霉菌的抑制作用。

My company equipment installation, commissioning work was completed in 2004, after my company's technology for their efforts, has a dense Fu with an annual output of 10 tons of vanillin production capacity.

我公司设备安装、调试工作已于2004年完工，经过我公司技术人员的努力，已具备了年产10吨浓馥香兰素的生产能力。

A method for determination of vanillin content in milk powder by gas chromatography with flame ionization detector has been established.

建立了氢火焰离子化检测器-气相色谱法检测奶粉中香兰素含量的方法。

Rich berry and plum aromas with a hint of licorice and vanillin.

富含浆果和李子的芳香以及甘草和香兰素的气息。

Vanillin 58 was used as starting material, which underwent methylation, bromination, acetalization, lithiation followed by nucleophlic addition to aldehyde, Diels-Alder reaction, selective reduction and lactonization to produce diphyllin in an overall yield of 38%(7 steps).

这个方法从香兰素58开始，经过甲基化、溴化、成乙二醇缩醛反应、锂化而后对醛亲核加成、Diels-Alder反应、选择性还原反应和内酯化反应共7步，最后得到diphyllin，总产率38％。

Was obtained from vanillin by nitration and demethylation.

中间体3 的制备由香兰素经常温硝化、脱甲基制得。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。